Lighting apparatus

ABSTRACT

An assembly light apparatus has a LED module, a light box, a driver box. The driver box is installed in a cavity of a ceiling via a fixing structure. The light box contains the LED module. The light box has a output opening and a back cover. The back cover has a first electrical terminal and a second electrical terminal connected to a first electrode and a second electrode of the driver box respectively. The light box and the driver box are detachably connected with a light box connector and a driver box connector.

RELATED APPLICATION

The present application is a continued-application of U.S. patentapplication Ser. No. 16/368,138.

FIELD OF INVENTION

The present invention is related to a light apparatus and moreparticularly related to an assembly light apparatus.

BACKGROUND

There are various light devices in daily life. In modern society, lightdevices are an important symbol as well as tools to support today'scivilization growing.

Some light devices are fixed in the ceiling like downlight devices. Someare placed on table, and some other light devices are used for variousworking needs. For example, a photographer needs various light devicesto create a desired luminous environment. Some light devices need to beportable to be conveniently moved and placed in working environments.

Innovative light devices might not appear important as they are. But itis helpful to enhance human life when various novel light devices areinvented and provided to the world. Such innovation may be on decreasingmanufacturing cost, adding features, or making light devices moreportable or with more functions.

Therefore, it is beneficial to continue find out innovative lightdesigns in such crowded art. Any innovation advancement may bringcertain advancement of this society, by finding new design, newtechnical problems and new technical solutions to bring new products.

SUMMARY OF INVENTION

According to an embodiment of the present invention, an assembly lightapparatus is designed to be installed in a cavity of a ceiling.

The assembly light apparatus has a LED module, a light box, a driverbox, a first electrode, a second electrode, a light box connector, adriver box connector and a fixing structure.

The light box has a containing space for disposing the LED module. Thelight box has a back cover and a output opening. For example, the lightbox may be a three-dimension disk shape structure with a sidewall with aside covered by the back cover and the other side has an output openingcovered by a transparent or translucent cover. In another example, thelight box may have a polygonal shape.

The LED module emits a light that is directly or indirectly escapedoutside the assembly light apparatus. For example, the LED module may beplaced facing to the output opening. In such case, one or severaloptical means like reflector, lens or diffusion layer may be placedalong light output path. In another example, the LED module is placed atside wall of the light box and a light guide is used for directing lightto another angle for outputting form the output opening.

The back cover has a first electrical terminal and a second electricalterminal. For example, the first electrical terminal and the secondelectrical terminal may be protruding pins or concave sockets on theback cover of the light box.

The driver box contains a driver circuit for converting an externalpower source to a driving current, e.g. 110-220V alternating current toa direct low-voltage current.

The first electrode and the second electrode are electrically connectedto the driver circuit.

The light box connector is fixed on the light box. The driver boxconnector is fixed on the driver box. The light box connector and thedriver box connector have corresponding structures to be detachablyconnected to each other. When the light box connector and the driver boxconnector are connected, the light box is fixed to the driver box tokeep the first electrical terminal and the second electrical terminal tocontact with the first electrode and the second electrode for routingthe driving current to the first electrical terminal and the secondelectrical terminal to drive the LED module to emit the light.

The fixing structure is fixed on the driver box for attaching the driverbox to the cavity of the ceiling. In other words, the driver box may befirstly fixed on a ceiling with the fixing structure, e.g. two springs,elastic clips, corresponding to different light fixture standards, e.g.to be installed in an UL box in north America.

In some embodiments, the driver box connector includes a L shape hook.The light box connector includes a groove track. The attachment betweenthe driver box and the light box is performed by sliding the L shapehook into the groove track.

In some embodiments, the assembly light apparatus further includes astop lock for further locking the L shape hook in a specific position ofthe groove track. Specifically, an extra force is necessary to move theL shape hook away from the specific position of the groove track. Thereare various ways to implement such stop lock. For example, an elasticcurve groove may be used for holding an end of the L shape hook at thespecific position.

In some embodiments, the driver box has a circular protruding structurecorresponding to an inner wall of a circular electrode module on theback cover of the light box to align the driver box with respect to thelight box.

Specifically, the light box has the circular electrode module with aninner wall facing upwardly and the driver box has the correspondingcircular protruding structure facing downwardly. When installedcorrectly, the circular protruding structure enters and fits in thecontaining space defined by the inner wall of the circular electrodemodule.

Please be noted that the circular protruding structure may be disposedon the light box while the circular electrode module is disposed on thedriver box as an alternative embodiment.

In some embodiments, furthermore, the first electrode and the secondelectrode are two metal clips disposed at a relative distance from thecircular protruding structure. The circular electrode module has anouter ring and an inner ring. When the circular protruding structure isembedded inside the inner wall of the circular electrode module, thefirst electrode and the second electrode respectively electricallycontact with the first electrical terminal located at an inner surfaceof the outer ring and an outer surface of the inner ring.

In some embodiments, the outer ring and the inner ring of the circularelectrode module are made of plastic material attached with the firstelectrical terminal and the second electrical terminal respectively. Inother words, the outer ring, the inner ring and even the major part ofthe housing of the light box may be made of insulated material likeplastic, which may be less expensive and save certain manufacturingcost.

In some embodiments, the outer ring and the inner ring have fastenerstructures to fix the first electrical terminal and the secondelectrical terminal. For example, certain elastic hooks may be placed attop of the outer ring and the inner ring to keep to the first electricalterminal and the second electrical terminal attaching to their sidewalls.

In some embodiments, the back cover of the light box includes metalmaterial. The back cover is heat conductively connected with the driverbox for enhancing heat dissipation. In other words, heat generated fromthe LED module may be transmitted to the housing of the driver box forenhancing heat dissipation. In some other case where the driver boxgenerates more heat, the heat of the driver box may be delivered to theback cover of the light box, which may be regarded as a heat sink.

In some embodiments, the back cover of the light box is closely attachedto the surface of the driver box. In some other embodiments, certain airchannels are specifically remained between the driver box and the lightbox to keep one heat source to interfere with components in another heatsource.

In some embodiments, heat is firstly transmitted from the light box tothe driver box and then further transmitted to another structure like anUL box via the fixing structure.

In some embodiments, the light box includes a panel light module. Unliketraditional panel light, which has a small thickness light panelattaching on a ceiling facing down, the light box is detachable from thedriver box.

The LED module may include multiple LED chips emitting light into alight guide from a lateral wall of the light box and the light guideguides the light from the output opening. The light guide may be made ofa plastic plate disposed with multiple light paths and light decouplinggrooves, convex or concave structures for light to escape in desireddirection and desired pattern.

In some other embodiments, the light box may include a focus lens forconverting the light to a light beam at the output opening. For example,the focus lens include one or multiple lens combination. Alternatively,the focus lens may include more than thousands of micro optical lenseach respectfully adjusting light paths and form an overall light beam.The term ‘light beam’ refers to a light output helpful for emphasizingan object projected by the light beam, e.g. with a half-intensity angleof less than 70 degrees or other desired optical effect. Half-intensityangles are standard terms known by persons of ordinary skilled in theart to define optical characteristic, particularly light beam, of alight device.

In some embodiments, since the light box is detachable, another lightbox with different characteristic may be installed to the same driverbox. Specifically, users may buy a assembly light apparatus kit,including multiple light boxes that are replaceable for differentpurposes.

For example, users may detach a traditional panel light box and attach acolorful holiday light module with the same light box connector to befixed to a corresponding driver box connector for holiday use. After theholiday, the holiday effect light box, e.g. with colorful filters, maybe replaced back to the traditional panel light box.

In some embodiments, the idea may be extended further. Specifically,non-luminance device with the same light box connector as the light boxmay be designed to replace the light box when necessary by detaching thelight box from the driver box and then attaching the non-luminancedevice to the driver box. For example, a Wi-Fi router, a speaker, acamera, or any other Internet-of-Things devices.

For example, a projector module may be designed to have an interfacehaving the light box connector to be attach to the driver box. The datainput of the projector module may be provided wirelessly. The powersupply, which may occupy major space, may be now replaced with thedriver box. Therefore the projector module may have compact size.

In addition, when the projector module is attached to the driver box,the projector module is located at a perfect position to project imagesfrom top to a screen.

In some embodiments, the light box connector is integrated with thefirst electrical terminal and the second electrical terminal. In otherwords, both the structural connection and electrical connection areperformed by one or two integrated components. For example, electrodeswith corresponding wires may be placed on the L-shape structure that isinserted to a corresponding groove track as mentioned above.Corresponding electrodes are also placed on the groove track and whenthe L-shape structure is placed in the groove track, both structuralconnection and electrical connection are completed at the same time.

Structures other than L shape structures as mentioned above may be usedonce they provide both structural and electrical connection between thelight box and the driver box.

In some other embodiments, the light box connector is located at adifferent position from the first electrical terminal and the secondelectrical terminal. In other words, the structural connection betweenthe light box and the driver box is separate from electrical connectiontherebetween.

In some embodiments, the first electrode is a L shape chip with a firstend for connecting to the first electrical terminal and with a secondend for fixing a screw to electrically connect to the driver circuit.For example, the first electrode and the second electrode are two Lshape chips with one ends arranged in parallel while the other endsextending to opposite position, e.g. a T shape structure. An insulationmaterial is attached between the two electrodes and two holes aredisposed on the other ends of the two electrodes. Metal screws that maybe used for establish electricity connection are inserted into the holesand enter into the driver box to contact terminals of the drivercircuit, thus routing the driving current from the driver circuit to thefirst electrode and the second electrode.

In some embodiments, the back cover of the light box and a bottom plateof the driver box is heat conductive connected. For example, the backcover of the light box and a bottom plate of the driver box contact toeach other. Heat dissipation glues may even be applied between the lightbox and the driver box.

In some embodiments, the driver circuit is located on a driver circuitplate away from the bottom plate of the driver box. In other words, thedriver circuit is kept a distance not directly close to the light box,to avoid heat accumulation to affect the components of the light box andthe driver box.

In some embodiments, a magnetic component may be added for facilitatingconnection between the light box and the driver box. For example, amagnetic unit and a corresponding unit are placed on the light box andthe driver box. When users detach or attach the light box to the driverbox, users usually need to stand on a ladder. Magnetic forces may helpfix the light box and the driver box more robustly.

Furthermore, the magnetic unit may provide the function of alignment.Users may not need to use their eyes to align the light box with thedriver box. The magnetic force helps provide users necessary feedbackfor users to correctly install the light box to the driver box.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 illustrates a driver box embodiment.

FIG. 2 illustrates a light box embodiment.

FIG. 3 illustrates an exploded view of a driver box embodiment.

FIG. 4 illustrates the driver box embodiment in another view point.

FIG. 5 illustrates a light box and a corresponding driver box.

FIG. 6 illustrates another view point of the example of FIG. 5.

FIG. 7 is a cross-sectional view of an assembly light apparatusembodiment.

FIG. 8 is a diagram illustrating component relation in an embodiment.

FIG. 9 is a diagram illustrating combination of a driver box to multiplelight boxes and other devices.

DETAILED DESCRIPTION

Please refer to FIG. 1. FIG. 1 illustrates a driver box embodiment.

In FIG. 1, the driver box 10 has a bottom plate 104 with a L shapestructure 101 as a driver box connector to be attach to a light boxexplained as follows. The driver box 10 has two elastic clips 102, 103as a fixing structure to fix to a cavity of a ceiling. In this example,the two elastic clips 102, 103 are used for fixing the driver box 10 toa UL box in America area. For countries or areas with differentstandards, the fixing structure may be changed to a pair of springs, aninstallation box, or any other fixing structure to fix the driver box toa cavity of a ceiling. In some other embodiments, the cavity may not beexisted and the assembly light apparatus, including its driver box, isprotruding from the installed surface. In addition, such assembly lightapparatus may be installed on a surface of a wall or a cavity on a wall.In such case, the ceiling is interpreted as the wall.

The driver box 10 has a box housing 105 for containing a driver circuitfor converting external power source to a driving current.

In this example, the driver box 10 has a bottom plate 104, which may bemade of metal material for heat dissipation and for rigidityconsideration. The box housing 105, on the other hand, may be made ofplastic.

Next, please see FIG. 2. FIG. 2 illustrates a light box embodiment.

In FIG. 2, the light box has a circular electrode module 21, a backcover 24, a frame 23, and a light box connector including two groovetracks 221, 222.

The circular electrode module 21 has an outer ring 213 and an inner ring214. A first electrical terminal 211 is attached to an inner surface ofthe outer ring 213. A second electrical terminal 212 is attached to anouter surface of the inner ring 214. The outer ring 213 and the innerring 214 may be made of plastic. In addition, one or more than onefastener structures 215 may be used for fix the first electricalterminal 211 and the second electrical terminal 212 to the outer ring213 and the inner ring 214.

The two groove tracks 221, 222 have tracks to receive L shape structuresof a corresponding driver box connector. The inner wall of the innerring 214 defines an aligning space for storing a circular protrudingstructure of a corresponding driver box mentioned below to align thedriver box and the light box

Please see FIG. 3. FIG. 3 illustrates an exploded view of a driver boxembodiment.

In FIG. 3, the driver box includes screws 36, a box housing 105, adriver circuit 34, elastic clips 102, 103, a bottom cover 33, a circularprotruding structure 37, a first electrode 321, a second electrode 322,a bottom plate 104, a L shape structure 101.

The box housing 105 and the bottom cover 33 forms a box containing thedriver circuit 34. In this case, the driver circuit 34 is located on acircuit board facing downwardly. In another embodiment, the circuitboard may be inverted to face upwardly to attach to the top of the boxhousing 105, keeping a distance from the bottom cover 33, which may beclosely touching another heat source, e.g. the light box.

The elastic clips 102, 103, as mentioned above, may be replaced withother structures to correspond to different light device standards orinstallation environment.

The circular protruding structure 37 is designed to be installed to aspace defined by an inner wall of a ring electrode module as mentionedin FIG. 2. A more clear illustration is provided in following drawings.

In this example, the first electrode 321 and the second electrode 322are two L shape metal clips. One ends of the first electrode 321 and thesecond electrode 322 are aligned in parallel while keepingnon-electrically contact. The other ends of the first electrode 321 andthe second electrode 322 are extended in opposite directions. There areholes 3211, 3221 on the first electrode 321 and the second electrode 322so that when metal screws are screwed via the hole to the driver box toreach corresponding electrical terminals, the driving current created bythe driver circuit 34 is routed to the first electrode 321 and thesecond electrode 322.

The bottom plate 104 has two side parts bent as the L shape structure101 to enter the groove tracks 221, 222 and therefore provide structureconnection between the driver box and the light box, by rotation. Pleasebe noted that, in addition to rotation operation, other structures withassociated operations like elastic hooks with corresponding holes, maybe used as alternative ways to implement the present invention andshould be regarded as within the invention scope.

In addition, there is a hole 310 in the middle of the bottom plate 104so that the first electrode 321, the second electrode 322 and thecircular protruding structure 37 may pass through to contactcorresponding components on the light box.

Please refer to FIG. 4. FIG. 4 illustrates the driver box embodiment inanother view point.

In addition to the description provided above, FIG. 4 further shows moreclearly for the circular protruding structure 37, driver electrodes 32of the first electrode and the second electrode, and the L shapestructure 10. It can be seen from the FIG. 4 that the driver electrodes32 are kept a fixed distance from the circular protruding structure 37.

In the following drawings, it is illustrated when the circularprotruding structure 37 is entering the corresponding aligning space,the driver electrodes gets closer and then contacts the electricalterminals of the light box.

Please refer to FIG. 5 and FIG. 6. FIG. 5 illustrates a light box and acorresponding driver box. FIG. 6 illustrates another view point of theexample of FIG. 5.

In FIG. 5 and FIG. 6, a light box 51 and the a driver box 52 areprepared and then combined by aligning the circular protruding structureand the circular electrode module 511. The driver box connector is fixedto a corresponding light box connector. In this case, the driver boxconnector are two L shape structures and the light box connector are twogroove tracks.

In other words, there are structure connection and electrical connectionbetween the light box and the driver box.

FIG. 7 is a cross-sectional view of an assembly light apparatusembodiment.

In FIG. 7, it shows that an output opening 71 covered by a translucentor translucent cover provides light to escape from the assembly lightapparatus. The circular protruding structure 73 may be used for aligningand may also be used for structural support and/or heat dissipation. Thelight box has a back cover 76 made of metal for providing better heatdissipation. The light guide 72 helps change light path direction of thelight from the LED module 74 installed on a side wall 75 to the outputopening 71.

Ladder structures 77 for components near the output opening helpsincrease water proof capability.

FIG. 8 is a diagram illustrating component relation in an embodiment.

In FIG. 8, a driver box 82 is attached to a light box 81. Since thedriver box 82 is designed to be able to detach from the light box 81,another light box 81 may be used to replace the original light box.

The bottom plate 822 of the driver box 82 and the back cover 812 of thelight box 81 keep contact in this example. In some other examples, adistance may be kept by some columns for providing air flowing paths forhelping further heat dissipation.

In this example, the driver circuit 821 is located on top of the driverbox 82 to keep a distance from the contact area with the light box 81,particular when the light source 811 is a major heat source.

Magnetic components 823, 813 are used for helping aligning theconnection between the light box 81 and the driver box 82.

FIG. 9 is a diagram illustrating combination of a driver box to multiplelight boxes and other devices.

The driver box 91 has a driver box connector which may be alsointegrated with electrical connection capability. The driver box 91 maybe connected to different light boxes 92, 93 to provide different lightcharacteristics. Furthermore, non-luminance devices like the IoT(Internet of Things) device 94 may be connected to the driver box 91 toget structure support and electrical supply.

According to an embodiment of the present invention, an assembly lightapparatus is designed to be installed in a cavity of a ceiling.

The assembly light apparats has a LED module, a light box, a driver box,a first electrode, a second electrode, a light box connector, a driverbox connector and a fixing structure.

The light box has a containing space for disposing the LED module. Thelight box has a back cover and a output opening. For example, the lightbox may be a three-dimension disk shape structure with a sidewall with aside covered by the back cover and the other side has an output openingcovered by a transparent or translucent cover. In another example, thelight box may have a polygonal shape.

The LED module emits a light that is directly or indirectly escapedoutside the assembly light apparatus. For example, the LED module may beplaced facing to the output opening. In such case, one or severaloptical means like reflector, lens or diffusion layer may be placedalong light output path. In another example, the LED module is placed atside wall of the light box and a light guide is used for directing lightto another angle for outputting form the output opening.

The back cover has a first electrical terminal and a second electricalterminal. For example, the first electrical terminal and the secondelectrical terminal may be protruding pins or concave sockets on theback cover of the light box.

The driver box contains a driver circuit for converting an externalpower source to a driving current, e.g. 110-220V alternating current toa direct low-voltage current.

The first electrode and the second electrode are electrically connectedto the driver circuit.

The light box connector is fixed on the light box. The driver boxconnector is fixed on the driver box. The light box connector and thedriver box connector have corresponding structures to be detachablyconnected to each other. When the light box connector and the driver boxconnector are connected, the light box is fixed to the driver box tokeep the first electrical terminal and the second electrical terminal tocontact with the first electrode and the second electrode for routingthe driving current to the first electrical terminal and the secondelectrical terminal to drive the LED module to emit the light.

The fixing structure is fixed on the driver box for attaching the driverbox to the cavity of the ceiling. In other words, the driver box may befirstly fixed on a ceiling with the fixing structure, e.g. two springs,elastic clips, corresponding to different light fixture standards, e.g.to be installed in an UL box in north America.

In some embodiments, the driver box connector includes a L shape hook.The light box connector includes a groove track. The attachment betweenthe driver box and the light box is performed by sliding the L shapehook into the groove track.

In some embodiments, the assembly light apparatus further includes astop lock for further locking the L shape hook in a specific position ofthe groove track. Specifically, an extra force is necessary to move theL shape hook away from the specific position of the groove track. Thereare various ways to implement such stop lock. For example, an elasticcurve groove may be used for holding an end of the L shape hook at thespecific position.

In some embodiments, the driver box has a circular protruding structurecorresponding to an inner wall of a circular electrode module on theback cover of the light box to align the driver box with respect to thelight box.

Specifically, the light box has the circular electrode module with aninner wall facing upwardly and the driver box has the correspondingcircular protruding structure facing downwardly. When installedcorrectly, the circular protruding structure enters and fits in thecontaining space defined by the inner wall of the circular electrodemodule.

Please be noted that the circular protruding structure may be disposedon the light box while the circular electrode module is disposed on thedriver box as an alternative embodiment.

In some embodiments, furthermore, the first electrode and the secondelectrode are two metal clips disposed at a relative distance from thecircular protruding structure. The circular electrode module has anouter ring and an inner ring. When the circular protruding structure isembedded inside the inner wall of the circular electrode module, thefirst electrode and the second electrode respectively electricallycontact with the first electrical terminal located at an inner surfaceof the outer ring and an outer surface of the inner ring.

In some embodiments, the outer ring and the inner ring of the circularelectrode module are made of plastic material attached with the firstelectrical terminal and the second electrical terminal respectively. Inother words, the outer ring, the inner ring and even the major part ofthe housing of the light box may be made of insulated material likeplastic, which may be less expensive and save certain manufacturingcost.

In some embodiments, the outer ring and the inner ring have fastenerstructures to fix the first electrical terminal and the secondelectrical terminal. For example, certain elastic hooks may be placed attop of the outer ring and the inner ring to keep to the first electricalterminal and the second electrical terminal attaching to their sidewalls.

In some embodiments, the back cover of the light box includes metalmaterial. The back cover is heat conductively connected with the driverbox for enhancing heat dissipation. In other words, heat generated fromthe LED module may be transmitted to the housing of the driver box forenhancing heat dissipation. In some other case where the driver boxgenerates more heat, the heat of the driver box may be delivered to theback cover of the light box, which may be regarded as a heat sink.

In some embodiments, the back cover of the light box is closely attachedto the surface of the driver box. In some other embodiments, certain airchannels are specifically remained between the driver box and the lightbox to keep one heat source to interfere with components in another heatsource.

In some embodiments, heat is firstly transmitted from the light box tothe driver box and then further transmitted to another structure like anUL box via the fixing structure.

In some embodiments, the light box includes a panel light module. Unliketraditional panel light, which has a small thickness light panelattaching on a ceiling facing down, the light box is detachable from thedriver box.

The LED module may include multiple LED chips emitting light into alight guide from a lateral wall of the light box and the light guideguides the light from the output opening. The light guide may be made ofa plastic plate disposed with multiple light paths and light decouplinggrooves, convex or concave structures for light to escape in desireddirection and desired pattern.

In some other embodiments, the light box may include a focus lens forconverting the light to a light beam at the output opening. For example,the focus lens include one or multiple lens combination. Alternatively,the focus lens may include more than thousands of micro optical lenseach respectfully adjusting light paths and form an overall light beam.The term ‘light beam’ refers to a light output helpful for emphasizingan object projected by the light beam, e.g. with a half-intensity angleof less than 70 degrees or other desired optical effect. Half-intensityangles are standard terms known by persons of ordinary skilled in theart to define optical characteristic, particularly light beam, of alight device.

In some embodiments, since the light box is detachable, another lightbox with different characteristic may be installed to the same driverbox. Specifically, users may buy a assembly light apparatus kit,including multiple light boxes that are replaceable for differentpurposes.

For example, users may detach a traditional panel light box and attach acolorful holiday light module with the same light box connector to befixed to a corresponding driver box connector for holiday use. After theholiday, the holiday effect light box, e.g. with colorful filters, maybe replaced back to the traditional panel light box.

In some embodiments, the idea may be extended further. Specifically,non-luminance device with the same light box connector as the light boxmay be designed to replace the light box when necessary by detaching thelight box from the driver box and then attaching the non-luminancedevice to the driver box. For example, a Wi-Fi router, a speaker, acamera, or any other Internet-of-Things devices.

For example, a projector module may be designed to have an interfacehaving the light box connector to be attach to the driver box. The datainput of the projector module may be provided wirelessly. The powersupply, which may occupy major space, may be now replaced with thedriver box. Therefore the projector module may have compact size.

In addition, when the projector module is attached to the driver box,the projector module is located at a perfect position to project imagesfrom top to a screen.

In some embodiments, the light box connector is integrated with thefirst electrical terminal and the second electrical terminal. In otherwords, both the structural connection and electrical connection areperformed by one or two integrated components. For example, electrodeswith corresponding wires may be placed on the L-shape structure that isinserted to a corresponding groove track as mentioned above.Corresponding electrodes are also placed on the groove track and whenthe L-shape structure is placed in the groove track, both structuralconnection and electrical connection are completed at the same time.

Structures other than L shape structures as mentioned above may be usedonce they provide both structural and electrical connection between thelight box and the driver box.

In some other embodiments, the light box connector is located at adifferent position from the first electrical terminal and the secondelectrical terminal. In other words, the structural connection betweenthe light box and the driver box is separate from electrical connectiontherebetween.

In some embodiments, the first electrode is a L shape chip with a firstend for connecting to the first electrical terminal and with a secondend for fixing a screw to electrically connect to the driver circuit.For example, the first electrode and the second electrode are two Lshape chips with one ends arranged in parallel while the other endsextending to opposite position, e.g. a T shape structure. An insulationmaterial is attached between the two electrodes and two holes aredisposed on the other ends of the two electrodes. Metal screws that maybe used for establish electricity connection are inserted into the holesand enter into the driver box to contact terminals of the drivercircuit, thus routing the driving current from the driver circuit to thefirst electrode and the second electrode.

In some embodiments, the back cover of the light box and a bottom plateof the driver box is heat conductive connected. For example, the backcover of the light box and a bottom plate of the driver box contact toeach other. Heat dissipation glues may even be applied between the lightbox and the driver box.

In some embodiments, the driver circuit is located on a driver circuitplate away from the bottom plate of the driver box. In other words, thedriver circuit is kept a distance not directly close to the light box,to avoid heat accumulation to affect the components of the light box andthe driver box.

In some embodiments, a magnetic component may be added for facilitatingconnection between the light box and the driver box. For example, amagnetic unit and a corresponding unit are placed on the light box andthe driver box. When users detach or attach the light box to the driverbox, users usually need to stand on a ladder. Magnetic forces may helpfix the light box and the driver box more robustly.

Furthermore, the magnetic unit may provide the function of alignment.Users may not need to use their eyes to align the light box with thedriver box. The magnetic force helps provide users necessary feedbackfor users to correctly install the light box to the driver box.

In addition to the above-described embodiments, various modificationsmay be made, and as long as it is within the spirit of the sameinvention, the various designs that can be made by those skilled in theart are belong to the scope of the present invention.

The invention claimed is:
 1. A lighting apparatus, comprising: a LEDmodule; a light box for housing the LED module, the light box comprisinga back cover and a output opening for a light emitted from the LEDmodule to escape outside the assembly light apparatus, the back coverhaving a first electrical terminal and a second electrical terminal; adriver box for containing a driver circuit for converting an externalpower source to a driving current; a first electrode electricallyconnected to the driver circuit; a second electrode electricallyconnected to the driver circuit; a light box connector fixed on thelight box; a driver box connector fixed on the driver box whereby thedriver box connector for creating a detachable connection with thedriver box to the light box connector, wherein the detachable connectionfixes the light box to the driver box and helps contact the firstelectrical terminal and the second electrical terminal to contact withthe first electrode and the second electrode, respectively, for routingthe driving current to the first electrical terminal and the secondelectrical terminal so as to drive the LED module to emit the light; afixing structure fixed on the driver box for attaching the driver box tothe cavity of the ceiling, wherein the driver box connector comprises anL shape hook, the light box connector comprises a groove track, theattachment between the driver box and the light box is performed bysliding the L shape hook into the groove track; and a stop lock forfurther locking the L shape hook in a specific position of the groovetrack, an extra force being necessary to move the L shape hook away fromthe specific position of the groove track; wherein the driver box has acircular protruding structure corresponding to an inner wall of acircular electrode module on the back cover of the light box to alignthe driver box with respect to the light box; wherein the firstelectrode and the second electrode are two metal clips disposed at arelative distance from the circular protruding structure, the circularelectrode module has an outer ring and an inner ring, when the circularprotruding structure is embedded inside the inner wall of the circularelectrode module, the first electrode and the second electroderespectively electrically contact with the first electrical terminallocated at an inner surface of the outer ring and the second electrodeat an outer surface of the inner ring.
 2. The lighting apparatus ofclaim 1, wherein the outer ring and the inner ring of the circularelectrode module are made of plastic material attached with the firstelectrical terminal and the second electrical terminal respectively. 3.The lighting apparatus of claim 2, wherein the outer ring and the innerring have fastener structures to fix the first electrical terminal andthe second electrical terminal.
 4. The lighting apparatus of claim 3,wherein the back cover of the light box comprises metal material, theback cover is heat conductively connected with the driver box forenhancing heat dissipation.
 5. The lighting apparatus of claim 4,wherein heat of the light box is further indirectly dissipated via thefixing structure.
 6. The lighting apparatus of claim 1, wherein thelight box comprises a panel light module, the LED module comprisesmultiple LED chips emitting light into a light guide from a lateral wallof the light box and the light guide guides the light from the outputopening.
 7. The lighting apparatus of claim 1, wherein the light boxcomprises a focus lens for converting a light to a light beam at theoutput opening.
 8. The lighting apparatus of claim 1, further comprisinga second light box with the same light box connector as the light box toreplace the light box when necessary by detaching the light box from thedriver box and then attaching the second light box to the driver box. 9.The lighting apparatus of claim 1, further comprising a non-luminancedevice with the same light box connector as the light box to replace thelight box by detaching the light box from the driver box and thenattaching the non-luminance device to the driver box.
 10. The lightingapparatus of claim 1, wherein the light box connector is integrated withthe first electrical terminal and the second electrical terminal. 11.The lighting apparatus of claim 1, wherein the light box connector islocated at a different position from the first electrical terminal andthe second electrical terminal.
 12. The lighting apparatus of claim 1,wherein the first electrode is an L shape chip with a first end forconnecting to the first electrical terminal and with a second end forfixing a screw to electrically connect to the driver circuit.
 13. Thelighting apparatus of claim 1, wherein the back cover of the light boxand a bottom plate of the driver box is heat conductive connected. 14.The lighting apparatus of claim 13, wherein the driver circuit islocated on a driver circuit plate away from the bottom plate of thedriver box.
 15. The lighting apparatus of claim 1, further comprising amagnetic component for facilitating connection between the light box andthe driver box.
 16. The lighting apparatus of claim 15, the magneticcomponent facilitates alignment between the light box and the driverbox.